Category Archives: Acoustics

Customer Profile Cesar Rubio is a San Francisco Architectural photographer and keen audiophile. His tastes in components lean towards vinyl, valves and single driver or horn speakers. His high end audio system is installed in his living room which he also uses for entertaining. Project Overview This particular engagement involved integrating two JL Audio F112 [...]

Customer Profile The client, Chris Venhaus, is owner and operator of VH Audio. He has quite a bit of experience with acoustic measurements and had made an effort to acoustically treat his room. However he wanted to get an expert “second opinion” on his acoustic measurements and what further opportunities for improvement there might be. [...]

What are room modes and how do they impact sound quality? Some unavoidable facts: ALL rooms have naturally occurring resonance frequencies called room modes or standing waves. If you read around the web you’ll find some more esoteric terms like eigentones or eigenmodes. I quite like calling them modal resonances. Room modes are the main cause [...]

How do you buy the right acoustic panels? This blog article is part of a mini-series that should give you a good overview on how to buy the right acoustic panels for your home theater, home recording studio or listening room. I say partially because acoustics is a very complex topic, and as you read [...]

ATC and many other pre-eminent manufacturers of what we call “forward firing cone / dome speakers” believe that for optimal speaker off axis response any given woofer or midrange driver should not be operated above ka=2. The reason is that above ka=2 the driver gets increasingly directional resulting in an off axis suckout at the [...]

This blog article is the seventh in a series on speaker directivity and off axis response. This article will consider the off axis response of constant bandwidth transducers (CBTs) and consequences for acoustic design. Previous articles in the series established the theoretical foundation in terms of the psychoacoustic as well as subjective importance of speaker [...]

This blog article is the sixth in a series on speaker directivity and off axis response. This article will consider the off axis response of omidirectional speakers (“omnis”) and consequences for acoustic design. Previous articles in the series established the theoretical foundation in terms of the psychoacoustic as well as subjective importance of speaker off [...]

This blog article is the fifth in a series on speaker directivity and off axis response. This article will consider the off axis response of coaxial speakers and consequences for acoustic design. Previous articles in the series established the psychoacoustic as well as subjective importance of speaker off axis response, different ways to measure speaker [...]

This blog article is the fourth in a series on speaker directivity and off axis response. This article will consider the off axis response of constant directivity speakers and consequences for acoustic design. Previous articles in the series established the psychoacoustic as well as subjective importance of speaker off axis response, different ways to measure [...]

This blog article is the third in a series on speaker directivity and off axis response. Previous articles in the series established the psychoacoustic as well as subjective importance of speaker off axis response and looked at different ways to measure speaker directivity. Today we will look at the directivity characteristics of forward firing cone / [...]